# Duct Construction vs Derated

The clearest difference is rating: Derated at 4.9 against Duct Construction's 1.0. Derated also leads on ratings volume (10 vs 1) and chart position (#181 vs unranked). Duct Construction's advantage is price ($0.99 vs $1.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Duct Construction costs $0.99 and Derated $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Derated holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Derated has 10 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Duct Construction | Derated |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/duct-construction/id6443518338/reviews) | **[4.9 (10 ratings)](https://appshunter.io/ios/app/derated-conduit-fill/id6468839409/reviews)** |
| Number of ratings | 1 | **10** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Monetization | Paid | Paid |
| Best chart rank | — | **#181** |
| Size | 1 MB | 6 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wassim Murr](https://appshunter.io/developer/1474939474) | [Bret Hardman](https://appshunter.io/developer/788803580) |

## What reviewers say

### Duct Construction

[App page](https://appshunter.io/ios/app/duct-construction/id6443518338)

This app helps determine duct construction and reinforcement options based on duct size and system pressure class. It provides condensed lists of suitable options, saving time spent on manual calculations and table lookups. Results are based on industry standards for galvanized steel duct sheets.

**Highlights:** Duct size range from 2" to 120", Pressure classes up to 4 in.wg, Calculates duct weights per linear foot, Determines required duct gauge and reinforcement spacing, Clear illustrations for reinforcement types, Simple and effective UI design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Derated

[App page](https://appshunter.io/ios/app/derated-conduit-fill/id6468839409)

**Currently charting:** #181 Top Paid · Productivity (US App Store)

This app simplifies complex electrical calculations for electricians. It allows real-time calculation of conduit fill and wire ampacity derating, adhering to NEC guidelines. Results are accurate and easily shareable for collaboration or client communication.

**Highlights:** Real-time conduit fill calculation, Simultaneous wire ampacity derating, Adheres to NEC guidelines, Uses NEC Chapter 9, Table 4 & 5 data, Easy wire set setup, Shareable calculation results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Duct Construction free?

Duct Construction costs $0.99, with no in-app purchases.

### Is Derated free?

Derated costs $1.99, with no in-app purchases.

### Which has better reviews, Duct Construction or Derated?

Derated is rated higher. Duct Construction averages 1.0 out of 5 from 1 ratings, while Derated averages 4.9 from 10 ratings.

### Do Duct Construction or Derated have ads?

Neither Duct Construction nor Derated shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*